Sweeney F. Anna and Ellen Richardson.
In: Finkleman, P, ed. Encyclopedia of African American History: From the Colonial Period through the Age of Frederick Douglass, 1619-1895. New York and Oxford: Oxford University Press, 2006.

Sweeney F. The Republic of Letters: Frederick Douglass, Ireland and the Irish Narratives (republication).
In: Kenny, K, ed. New Directions in Irish American History. Madison: University of Wisconsin Press, 2003.